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Whattimeisit？Whattimeisit？Whattimeisit？Whattimeisit？1.直接表达法：用基数词按钟点+分钟的顺序直接写出时间7:00seven(o'clock)11:05eleven-o-five6:40sixforty时钟的读法2.间接表达法A.如果分钟数少于30分钟，可用分钟+past+钟点表示，其中past意思是“过”4:20twentypastfour8:01onepasteightB.如果分钟数多于30分钟，可用（60分钟-原分钟数）+to+（原钟点数+1）表示，其中to意思是“差”。8:35twenty-fivetonine11:52eighttotwelveWhattimeisit？Unit20Whatasurprise！Listening◆IsLucy'smusicclassatsixo'clock?◆MustLucyfindherbook?◆Ishermusicbookinherschoolbag?◆WhereisLucy'smusicbook?No,itisn't.Yes,shemust.Inherschool.Yes,itis.Listenagainandjudge.True(T)orFalse(F)?1.Karenisbusy,too.6.Lucyisready.5.Lucymustfindherbook.2.Lucy'smusicclassisatsixo'clock.3.Lucy'smusicbookisonthetable.4.Lucymusthurryup.TFFTTTlookfornextwhenbyefindquartertalkhalfpaselessonspuriselookuplooklikelookoutlookafterLookandsay.1.惊奇,诧异2.使人惊讶的事,意外的事3.突然袭击Whatasurprise!好一个意外呀！Whata+名词惯用感叹句，表示吃惊。Whataday!多好的一天，多糟糕的一天surprise[sə'praiz]名词n.Whataprettyboy!★Nicetospeaktoyou-----在电话里问候某人的习惯用语。★Howareyou?/HowisKen?朋友和熟人之间开始谈话前惯用语。Howarethey?HowareLucyandLily?回答：I’mfine.I’mOK.I’mverywell.I’msad.I’mhappy.I’mbusy.I’mhot.I’mcold….Keystructures11、用介词in的时间短语：一天中的某段时间（intheevening/morning/afternoon）月份（inMarch）年份（in1997）季节（inspring）世纪（inthe20thcentury）节日（inEasterweek【时间长的】）时期（intheholidays）介词in/on/at2.用介词on的时间短语通常表示:星期天onsunday在几月几号onMay1st五月一号星期一的早晨onthemorningofMonday在圣诞节onChristmasDay介词in/on/at3、用介词at的时间短语通常表示：确切的时间at10o’clock用餐时间atlunchtime其他时刻atnoon/night年龄attheageof27介词at可表示地点，通常用于某个小地点之前。atthebutcher’s；attheoffice介词in/on/at介词in/on/at【in】是“大姐”，后面所接的都是较长时间（月、年、季节等）。【on】是“二姐”，后面所接的时间多与日期有关（星期、日期、具体时间、纪念日等）。【at】是“小妹”，因为接在后面的时间最短（具体时刻或某短暂时间）。must必须（情态动词）用法后接动词原形mustdosth.一、表“必须”。Youmusttalktothemabouttheirstudy.二.在否定结构中表不许。Youmustn‘tleavehere.三.表坚定的建议。YoumustcomeandseeusassoonasyougettoShanghai.四、否定形式mustn’t一定不要，不能Youmustn'tleavehere.你不能离开这儿。•一般疑问句：将must提到句首•MustIcleantheclassroomnow?我必须现在打扫教室吗？肯定回答：Yes,youmust.是的。否定回答：No,youneedn't.不必现在打扫。（No,youdon'thaveto.）Pairwork◆What'sthedifferencebetweenmodals“can”and“must”?can表示“能，会”，表示一种能力；must表示“必须，强制”◆can、must用法结构是什么？肯定结构：主语+can/must+动词原形否定结构：主语+can't/mustn't+动词原形疑问句：Can/Must+主语+其他canmust1.I______dance.2.______youopenthedoor?3.You______becareful.4.What_____Idoforyou?5.We______washourhandsbeforedinner.PractisecanCanmustcanmust123456789101112$100$200$300$100$200$300$300$300$200$200$100$100$100It’shalfpastone.Whattimeisit?$100It’shalfaquartertotwo.Whattimeisit?$100A.onB.atC.inD.onIt’sLucy’smusiclesson____halfpastsix.$100A.toB.pastC.ofD.onCanIcallyouathalf____nine?$200Sheiswashingherhands.Whatisshedoing?$200Whatisshedoing?Sheisdoinghomework.$200Hello,Linda.____to____toyou.nice,speak$200can,athalf___Icallyou______pastnine?Howtosay“谈话”inEnglish？Canyouspellit?$300talk$300Isitright?suprisesurprise$300findtimeCanyoupronounce（发音）thesewords?$300Englishlesson1:45MyEnglishlessonisat____________,andit’s_____________now.halfpastoneaquartertotwoThanks.